激光解吸电离飞行时间质谱中的离子延时引出新技术的研究  

A STUDY ON PULSED ION EXTRACTION OF MATRIX－ASSISTED LASER DESORPTION TIME-OF-FLIGHT MASS SPECTROMETRY

作　　者：查庆民[1] 任三香[1] 金柄法 陈东 黎军 赖志辉 邓慧敏 赵善楷 

机构地区：[1]中山大学测试中心,广州510275

出　　处：《质谱学报》1999年第3期1-2,共2页Journal of Chinese Mass Spectrometry Society

摘　　要：The paper described and some experiments we have done on delayed ion extraction in laser desorption/ionization take-of-flight mass spectrometry Which led to much higher mass resolution compared the previous continuous mode. By computer modeling and carefully choosing The parameters such- as delayed time and voltage ratio (extracting volt/repelling volt),we have got mass resolution up to 1734(reflect mode) with gramicidine (a-c yano-4-hydroxycinnamic acid as matrix); 2124 with insulin(4HCCA as matrix) and 960 with Corn (2-nitrophyenyl octyl octyl ether as matrix) on our modified lab-built instrument.The paper described and some experiments we have done on delayed ion extraction in laser desorption/ionization take-of-flight mass spectrometry Which led to much higher mass resolution compared the previous continuous mode. By computer modeling and carefully choosing The parameters such- as delayed time and voltage ratio (extracting volt/repelling volt),we have got mass resolution up to 1734(reflect mode) with gramicidine (a-c yano-4-hydroxycinnamic acid as matrix); 2124 with insulin(4HCCA as matrix) and 960 with Corn (2-nitrophyenyl octyl octyl ether as matrix) on our modified lab-built instrument.

关 键 词：激光解吸电离 飞行时间质谱 离子延时引出 

分 类 号：O657.6[理学—分析化学]